JAM LABEL - Toshiba TEC B-SX4 Thermal Label Printer

Check length of label and type of sensor used and check the sensors

Paper jam:
- The label is not correctly declared.
- Callibarate the sensors (5 sensor adjust) diagnostics menu
- the silicoe support is too thick.

Disconnect both cables. Detach the front panel. Lift the paper guide (on the right). Clear the jam. Assemble the printer and run a cleaning card through it (a business card moistened with hand sanitiser will also do).

^CM

you have a detection problem:
Check the size of the label and the sensor settings and do a cllibration if necessary

there's a paper jam inside the mechanism of thermal label printer, if you can do open it, clean it also, just be careful to put it again.

I ran heavy card stock through printer several times, it caught the label and pulled it out on the paper eventually.

 Follow these steps to remove a paper jam: 
1. Press the Resume button. 
  If the paper jam does not clear, then go to the next step. 
2. Turn off the printer. 
3. Remove the rear access door. Press the handle to the right, and then pull out the door. 

4. Remove any paper that is inside the printer by pulling it out from the back of the printer. 
  If you are printing labels, verify that a label did not become detached from the label sheet while passing through the printer. 
5. Replace the rear access door securely. 
6. If the paper jam cannot be removed from the back of the printer, raise the printer cover, remove the paper jam from the front of the printer, and then lower the cover. Caution Remove the paper jam carefully as it is possible to damage the 
  printer when removing paper from the front. 
7. Turn on the printer, and then press the Resume button. 
8. Reprint the document. Note If paper jams occur frequently, try using a heavier paper. See the reference guide for paper weight specifications. 

The tape can't be rewound into the casette once the label has been made because the clear portion has been laminated to the label back.

Sounds like you forgot to plug the High voltage transformer or a sensor back